SAE1040,DIN 1.1186 - SAE1045, CK45, DIN 1.1191 - SAE1050, DIN 1.1210 Steel, Carbon Steel
PRODUCT DESCRIPTION
SAE 1040-1045-1050 steels are medium carbon steels offering high strength, good machinability, and wear resistance, suitable for automotive and industrial components.PRODUCT TYPES
SAE 1040-1045-1050 Steel Overview
SAE 1040, SAE 1045, and SAE 1050 are medium carbon steels commonly used in a wide range of applications. They offer excellent balance between strength, hardness, and machinability, making them ideal for producing parts that require high strength but are still machinable. These steels are often used in the production of shafts, gears, pins, and other mechanical components. They can be heat-treated to enhance hardness and wear resistance, making them suitable for automotive, industrial, and machinery applications.
Chemical Composition (in %)
| Element | SAE 1040 | SAE 1045 | SAE 1050 |
|---|---|---|---|
| Carbon (C) | 0.37 – 0.44 | 0.42 – 0.50 | 0.47 – 0.53 |
| Silicon (Si) | 0.10 – 0.35 | 0.10 – 0.35 | 0.10 – 0.35 |
| Manganese (Mn) | 0.60 – 0.90 | 0.60 – 0.90 | 0.60 – 0.90 |
| Phosphorus (P) | 0.040 max | 0.040 max | 0.040 max |
| Sulfur (S) | 0.050 max | 0.050 max | 0.050 max |
| Chromium (Cr) | 0.20 max | 0.20 max | 0.20 max |
| Nickel (Ni) | 0.25 max | 0.25 max | 0.25 max |
Physical Properties
- Density: 7.85 g/cm³ (or 7850 kg/m³)
- Tensile Strength (Rm): 600 – 900 MPa
- Yield Strength (Rp0.2): 450 – 650 MPa
- Elongation (A): ≥ 16% (for thickness up to 20 mm)
- Hardness (HB): 150 – 200 (depending on heat treatment)
Machinability
SAE 1040, 1045, and 1050 steels are considered to have good machinability. These medium carbon steels are ideal for machining into various shapes and sizes. The 1045 grade is often considered the best for general machining, while the 1040 and 1050 grades offer a balance between strength and machinability.
Machining Tips:
- Use high-speed steel (HSS) or carbide tools for optimal performance.
- Maintain moderate cutting speeds and feed rates to avoid tool wear.
- Consider using a lubricant or coolant during machining to reduce heat buildup.
Weldability
These steels offer moderate weldability. Proper preheating is recommended for thicker sections to avoid cracking during welding. Post-weld heat treatment may be necessary for thicker components to restore the mechanical properties and prevent stress concentrations.
Welding Guidelines:
- Preheating may be required for sections over 20 mm thick.
- Use low-hydrogen electrodes to minimize the risk of cracking.
- Post-weld heat treatment may be required to restore hardness and prevent embrittlement.
Applications
SAE 1040, SAE 1045, and SAE 1050 steels are used in various industries for producing parts that require a balance of strength, machinability, and wear resistance. Typical applications include:
- Automotive Industry: Shafts, gears, axles, and crankshafts.
- Industrial Machinery: Pins, connecting rods, and other mechanical components.
- Construction Equipment: Bearings, shafts, and axles.
- General Engineering: Gears, axles, and structural components.
Industries Using SAE 1040-1045-1050 Steel
- Automotive Industry: For parts that require good strength-to-weight ratios.
- Heavy Machinery: Used in components like gears and shafts that undergo high mechanical stress.
- General Engineering: For structural and mechanical components in various machinery and devices.
Key Advantages of SAE 1040-1045-1050 Steel
- High Strength: Offers high tensile and yield strength for demanding applications.
- Machinability: Good machinability for a variety of applications.
- Versatility: Suitable for use in various industries, including automotive, construction, and industrial machinery.
- Heat Treatability: Can be heat-treated to improve hardness and wear resistance.